Microphone unit for headphones



FIG. 1 is a perspective view of a microphone unit for headphones, including indicia that is shown in phantom lines and forms no part of the claimed design;

FIG. 2 is a front view of the headphones of FIG. 1;

FIG. 3 is a rear view of the headphones of FIG. 1, including indicia that is shown in phantom lines and forms no part of the claimed design;

FIG. 4 is a right side view of the headphones of FIG. 1;

FIG. 5 is a left side view of the headphones of FIG. 1;

FIG. 6 is a top view of the headphones of FIG. 1; and,

FIG. 7 is a bottom view of the headphones of FIG. 1. 

CLAIM What is claimed is an ornamental design for a microphone unit for headphones, as shown and described. 